Biology Virtual Lab- Parts of a Flower Essay Example

Biology Virtual Lab- Parts of a Flower Paper Tip of the stamen that produces pollen containing sperm| Filament| Slender stalklike part of the stamer that supports the anther| Ovary| Swollen base of the pistil that contains the ovules| Ovule| eggs that develop into seeds after they are fertilized| Petals| Colorful leaflike parts that attract insects and other animals for pollination| Pistil| Structure that contains the female reproductive organs| Sepals| Leaflike parts that enclose flower during bud stage| Stamen| Pollen producing part of a flower, consisting of a stalk and filament (male reproductive organs)| Stigma| Sticky tip of the pistil where pollen grains land| Style| Stalklike part of the pistil that connects the stigma to the ovary| 1. Which parts of the flowers are important in pollination? Describe their role in the process. Pollen is produced in the stamen. Pollination occurs when that pollen is transported from the anther to the style by insects or animals that are attracted to the plant by the beautiful petals of t he flower. 2. Which parts of the flower are involved in fertilization and fruit development? Fertilization starts after pollination has occurred, and begins inside the pistils. The ovule contained inside the ovary is fertilized and the ovule begins to harden and form into a seed to protect the embryo until it begins to grow into a new plant. The embryo grows inside the ovule and then develops into a fruit. 3. Many types of flowers produce fruits that are fragrant and sweet tasting. Describe how these characteristics of fruits may be important for dispersal. These types of fruits could be more appealing to animals that depend on plants for food. These animals then begin to remember these particular flowers for their fruit, and recognize them in other areas, which may allow that particular flower to grow in another location. 4. Many types of flowers are brightly colored, fragrant, and produce sweet nectar. Describe how these characteristics affect the process of pollination. We will write a custom essay sample on Biology Virtual Lab- Parts of a Flower specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Biology Virtual Lab- Parts of a Flower specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Biology Virtual Lab- Parts of a Flower specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Since most plants are unable to pollinate themselves, they are dependent upon something (usually insects or animals) that can move the pollen from plant to plant. These animals or insects are attracted to the plant by their sense of sight, taste, and smell and are attracted more easily to plants that have these characteristics. 5. Most species of plants produces flowers containing both stamen and pistils. Why is producing flowers with both male and female reproductive structure an advantage for plants? If the plants are self-compatible the likelihood that the pollen will move from the male to female parts increases. If the plants are self-incompatible, the probability that the pollinator will visit flowers of the same species and transfer the pollen from one plant to another increases.

The Chemical Composition of Rubbing Alcohol

The Chemical Composition of Rubbing Alcohol One of the types of alcohol you can buy over the counter is rubbing alcohol, which is used for disinfection and may be applied to the skin to produce a cooling effect. Do you know the chemical composition of rubbing alcohol? It is a mixture of denatured alcohol, water, and agents added to make the alcohol unpalatable to drink. It may also include colorants. There are two common types of rubbing alcohol. Isopropyl Rubbing Alcohol Most rubbing alcohol is made from isopropyl alcohol or isopropanol in water. It is common to find isopropyl rubbing alcohol at concentrations from 68% alcohol in water up to 99% alcohol in water. The 70% rubbing alcohol is highly effective as a disinfectant. Additives make this alcohol bitter-tasting, to try to prevent people from drinking it. Isopropyl alcohol is toxic, in part because the body metabolizes it into acetone. Drinking this alcohol can cause headaches, dizziness, nausea, vomiting, central nervous system depression, organ damage, and potentially coma or death. Ethyl Alcohol Rubbing Alcohol The other type of rubbing alcohol consists of 97.5-100% denatured ethyl alcohol or ethanol with water. Ethyl alcohol is naturally less toxic than isopropyl alcohol. In fact, it is the alcohol that naturally occurs in wine, beer, and other alcoholic beverages. However, the alcohol is denatured or made undrinkable in rubbing alcohol, both to control its use as an intoxicant and because the alcohol has not been purified to make it safe to drink. In fact, in the US, additives make it as toxic as isopropyl alcohol. Rubbing Alcohol in the UK In the United Kingdom, rubbing alcohol goes by the name surgical spirit. The formulation consists of a mixture of ethyl alcohol and isopropyl alcohol. Rubbing Alcohol in the US In the United States, rubbing alcohol made using ethanol must conform to Formula 23-H, which specifies it consists of 100 parts by volume of ethyl alcohol, 8 parts by volume of acetone, and 1.5 parts by volume of methyl isobutyl ketone (MSDS sheet). The remainder of the composition includes water and denaturants and may include colorants and perfume oils. Rubbing alcohol made using isopropanol is regulated to contains at least 355 mg of sucrose octaacetate (MSDS sheet) and 1.40 mg of denatonium benzoate per 100 ml volume. Isopropyl rubbing alcohol also contains water, stabilizer and may contain colorants. Rubbing Alcohol Toxicity All rubbing alcohol manufactured in the US is toxic to ingest or  inhale and can cause excessively dry skin if used often. In fact, if you read the product label, youll see there is a warning against most of the common uses of rubbing alcohol. All types of rubbing alcohol, regardless of their country of origin, are flammable. Formulations closer to 70% are less likely to catch fire than rubbing alcohol that contains a higher percentage of alcohol.

Job Specifications & Job Design Essay Example | Topics and Well Written Essays - 1500 words

Job Specifications & Job Design - Essay Example Must be able to assert his authority in such a manner that nobody feels unduly offended Ability to liaise with external stakeholders and develop healthy relationships with them Good planner and executioner towards the aims and objectives of the firm Having a vision for the future Must be able to decipher the indications and circumstances for optimal use towards successful implementation of firm's strategies Chef at a fine-dining restaurant Must believe in cleanliness Must be knowledgeable about a variety of dishes; native, continental, Chinese etc. An ability to communicate well with managers, other staff and customers in case there's some request from customers for special dishes for special occasions Must be able to adhere to the given timeline for readying the dishes The chef must be able to plan the things as per the requirements of the restaurant and can also manage some rush hour schedules Must be obsessive enough about the taste of the customers College Professor The college professor has to deal mainly with students and guide them to satiate their hunger for knowledge and learning. In general a college professor's job specifications include; Sound academic background i.e. well qualified in the subject for the post Must be able to earn the goodwill and respect of the students and fellow professionals Must have an inclination towards motivating the students to pursue their career goals Must be a good learner himself, as he has to learn about a lot of new discoveries/ advancements and impart such information to his students Must have an exemplary moral and character, so that his is held in high esteem by his students 3-6 Exercise 3: Job Design Q. Job design typically includes three methods: job...He is the one who has to work towards the development, expansion and diversification of the business activities. Therefore a CEO's job specifications include; Q. Job design typically includes three methods: job enrichment, job enlargement, and job rotation. In teams of three to five, brainstorm ten specific approaches organizations can take to accomplish each of these methods. When finished, you should have 30 different approaches to job design. Job enrichment is defined as the attempts towards making the job more rewarding in such a manner that worker-manager and worker-organization relations become much more cordial and productive. Such steps help in recruiting and retaining better quality workforce. Ten such approaches to this end could be; 9. By organizing brainstorming sessions with employees to take their assistance in planning and organizing for the job. This also includes giving due recognition to the employee/s for their constructive feedbacks/ suggestions. Job enlargement involves redesigning the work to include more variety, autonomy, task identity and feedback for the employee. This helps in raising the interest level of workers while the costs are reduced. Some such methods are; Job rotation involves moving employees from one job to another to enrich their experience and prepare them for multitasking functions. This also helps in avoiding monotony. Some general approaches for this task include;